package chapter02;

import java.util.Scanner;

public class Shopping {
    public static void main(String[] args) {
        /*
         * 假如你有二十元，至少需要购买一本书，剩余的钱还可以购买那些东西。
         */
        int pencil = 1;//铅笔价格
        int rubber = 2;//橡皮价格
        int cola = 3;  //可乐价格
        int book = 12; //书本价格
        int snacks = 5;//零食价格
        System.out.println("书本的价格为" +book+"元，您总共有20元");
        System.out.println("1.铅笔的价格为：" +pencil+"元");
        System.out.println("2.橡皮的价格为：" +rubber+"元");
        System.out.println("3.可乐的价格为：" +cola+"元");
        System.out.println("4.零食的价格为：" +snacks+"元");
        Scanner scl = new Scanner(System.in);
        System.out.println("请输入其他需要购买商品的序列号：");
        int id = scl.nextInt();
        switch (id){
            case 1:
                int pencilmoney = 20-book;
                int pencilsum = pencilmoney/pencil;
                int pencilsurplus = pencilmoney%pencil;
                System.out.println("购买完书本后还可以购买铅笔"+pencilsum+"个，还剩"+pencilsurplus+"元");
                break;
            case 2:
                int rubbermoney = 20-book;
                int rubbersum = rubbermoney/pencil;
                int rubbersurplus = rubbermoney%rubber;
                System.out.println("购买完书本后还可以购买橡皮"+rubbersum+"个，还剩"+rubbersurplus+"元");
                break;
            case 3:
                int colamoney = 20-book;
                int colasum = colamoney/cola;
                int colasurplus = colamoney%cola;
                System.out.println("购买完书本后还可以购买可乐"+colasum+"个，还剩"+colasurplus+"元");
                break;
            case 4:
                int snacksmoney = 20-book;
                int snackssum = snacksmoney/snacks;
                int snackssurplus = snacksmoney%snacks;
                System.out.println("购买完书本后还可以购买零食"+snackssum+"个，还剩"+snackssurplus+"元");
                break;
            default:
                System.out.println("您的输入有误。");
                break;
        }
    }
}
